1

TechHelper.Client/Pages/Exam/ExamPreview.razor

@@ -12,7 +12,11 @@
 
 				<MudButton OnClick="ExamClick"> 详情 </MudButton>
 				<MudIconButton Icon="@Icons.Material.Filled.Delete" aria-label="delete" />
-				<MudIconButton Icon="@Icons.Custom.Brands.GitHub" OnClick="CheckExam" Color="Color.Primary" aria-label="github" />
+				@if (bteacher)
+				{
+					<MudIconButton Icon="@Icons.Material.Filled.Check" OnClick="CheckExam" Color="Color.Primary" aria-label="github" />
+				}
+
 				<MudIconButton Icon="@Icons.Material.Filled.Favorite" Color="Color.Secondary" aria-label="add to favorite" />
 			</MudButtonGroup>
 		</MudPaper>
@@ -21,6 +25,10 @@
 </MudPaper>
 
 @code {
+	[CascadingParameter]
+	private Task<AuthenticationState> authenticationStateTask { get; set; }
+
+	private bool bteacher = false;
 
 	[Inject]
 	public NavigationManager navigationManager { get; set; }
@@ -45,6 +53,12 @@
 	public string? MaxHeight { get; set; } = "64";
 
 
+	protected override Task OnInitializedAsync()
+	{
+		bteacher = authenticationStateTask.Result.User.IsInRole("Teacher");
+		return base.OnInitializedAsync();
+	}
+
 	private void ExamClick()
 	{
 		navigationManager.NavigateTo($"exam/edit/{AssignmentDto.Id}");